When someone stabs Trina Langenbrunner to death and leaves her on a road in Cloquet, Minn., her family, community, and law enforcement work together for over 12 years to find her killer.

College junior Emily Murray, a popular religious studies major, goes missing late one night after quitting her job at a local bar; a month later, someone finds her body in a remote trailer, leading police to another gruesome discovery.